Question

In Java

The square. In one program, write 2 separate functions, and use them.
Prompt the user for the length of one side of the square.
Use it as input for the following 3 functions
Test length of side sizes: 5, 42, 12.30
Calculate area of square, 1 input parameter sideLength. calcArea
Calculate circumference of square, 1 input parameter sideLength: calcCircumference

Answer 1

import java.util.Scanner;

public class Square {
    // Function calcArea
    public static double calcArea(double length){
        // returning area
        return length*length;
    }

    //Function calcCircumference
    public static double calcCircumference(double length){
        // Returning circumference
        return 4*length;
    }

    // main function
    public static void main(String[] args) {
        // Creating scanner object
        Scanner scan = new Scanner(System.in);
        
        // Reading length  from user
        System.out.print("Enter length of one side of the square: ");
        double length = scan.nextDouble();
        
        // Calculating area
        double area = calcArea(length);

        // Calculating circumference
        double circumference = calcCircumference(length);
        
        // Printing area
        System.out.println("Area = "+area);

        // Printing circumference
        System.out.println("Circumference = "+circumference);
    }
}